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74843 (1999 TB39)
Classification: Main-belt Asteroid          SPK-ID: 2074843
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]

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Orbital Elements at Epoch 2459000.5 (2020-May-31.0) TDB
Reference: JPL 19 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1299576967280765 4.0896e-08  
a 2.415971265129897 1.0114e-08 au
q 2.101997204152399 9.8542e-08 au
i 7.833607414747983 3.7041e-06 deg
node 131.0057703619347 3.719e-05 deg
peri 313.3687996851162 4.1416e-05 deg
M 135.2041973345852 1.8416e-05 deg
tp 2458485.361810530844
(2019-Jan-01.86181053)
6.934e-05 TDB
period 1371.627152594753
3.76
8.6133e-06
2.358e-08
d
yr
n .2624619958266179 1.6482e-09 deg/d
Q 2.729945326107395 1.1429e-08 au
  Orbit Determination Parameters
   # obs. used (total)      857  
   data-arc span      9957 days (27.26 yr)  
   first obs. used      1993-01-22  
   last obs. used      2020-04-27  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .49283  
   source      ORB  
   producer      Otto Matic  
   solution date      2020-May-20 14:08:57  

Additional Information
 Earth MOID = 1.1269 au 
 Jupiter MOID = 2.46398 au 
 T_jup = 3.492 
[ show covariance matrix ]

Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]

Physical Parameter Table
Parameter Symbol Value Units Sigma Reference Notes
absolute magnitude H 15.5   n/a MPO309719  

74843 (1999 TB39)          Discovered 1999-Oct-03 by CSS at Catalina
Reference: 20040415/Numbers.arcLast Updated: 2004-04-19

[ show close-approach data ]
Alternate Designations
 1999 TB39 = 1993 BS12 
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]
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